Announcement of the record date for distribution of cash dividend.

1.Date of the resolution by the board of directors or shareholders meeting or decision by the
Company:2023/06/09
2.Type of ex-rights or ex-dividend (please enter: “Ex-rights”, ”Ex-dividend”, or ”Ex-rights and
dividend”):Ex-dividend
3.Type and monetary amount of dividend distribution: Cash dividend of NT$0.50- for per share.
4.Ex-rights (ex-dividend) trading date:2023/06/29
5.Last date before book closure:2023/06/30
6.Book closure starting date:2023/07/01
7.Book closure ending date:2023/07/05
8.Ex-rights (ex-dividend) record date:2023/07/05
9.Deadline for applying the conversion of the debt voucher:N/A
10.The closure period for the conversion of the debt voucher will start from the date:N/A
11.The closure period for the conversion of the debt voucher will end on the date:N/A
12.Payment date of cash dividend distribution:2023/07/28
13.Any other matters that need to be specified:None